Linear Noise for sleeping, focusing and drowning out the office
Twelve sounds you can layer into your own mix — noise colours, weather, water, a campfire. Everything is generated live in your browser, so there are no files to download, nothing repeats on a loop, and it keeps going as long as you like. Set a sleep timer and it fades itself out.
Sleep timer
offThe last minute fades out slowly, so the silence doesn't wake you.
Presets
one tap, then adjustYour mixes
saved in this browserWhich colour of noise do I want?
White noise has equal energy at every frequency, so it sounds bright and hissy — like an untuned radio. It is the best at masking sharp, high sounds: keyboards, voices through a wall, a beeping truck outside.
Pink noise drops 3 dB per octave as it climbs, which is roughly how our ears weight things, so it sounds even and natural — closer to steady rain or a waterfall. Most people find it the easiest to leave on for hours.
Brown noise (Brownian, not "brown") drops 6 dB per octave, so it is all low end — a deep rumble like a distant waterfall or a plane cabin. It is the gentlest on the ears and the best at covering low rumbles: traffic, an upstairs neighbour, a snorer.
Getting a good mix
- Start with one bed sound — a noise colour, rain, or the ocean — and get its level right before adding anything else.
- Add texture on top at a much lower level. Thunder at 30% under rain at 60% sounds like weather; both at 100% sounds like a machine.
- To mask a specific annoyance, match its pitch: high sounds need white or rain, low sounds need brown or the fan.
- Turn the whole thing down until it is only just doing its job. Loud masking is more tiring than the noise it is covering.
Presets worth trying
- Deep sleep — brown noise with rain far off. Nothing in it moves fast enough to pull you back awake.
- Focus — pink noise and a fan. Steady, featureless, no events to notice.
- Rainstorm — rain, wind and thunder rolling through every half a minute or so.
- Campsite — a fire crackling with crickets behind it.
Questions
Does this use any data while it plays?
No. The sound is synthesised by your browser in real time — there are no audio files. Once this page has loaded you can go offline and it will keep playing.
Will it keep playing on my phone with the screen off?
Usually not for long. Mobile browsers suspend audio when you leave the tab or lock the phone. Turn on "Keep the screen on" above and leave this tab in front, or use a laptop or tablet plugged in for overnight use.
Nothing happens when I press play.
Two likely reasons: every slider is still at zero — raise one — or your phone's silent/ringer switch is on, which mutes browser audio on iPhones.
Where are my saved mixes kept?
In this browser only, in local storage. Nothing is uploaded and there is no account. Clearing your browser data clears them — use "Copy link to this mix" if you want a mix you can keep or send to someone.
Does it loop?
No. The noise is generated continuously and the events — thunder, crackles, chirps, gusts — are scheduled at random, so you will never hear the same few seconds twice.